These Schumacher Racing Products 5.5mm pro ball studs are the extra long variant, supplied as a set of four. They are metal threaded ball studs designed as factory replacements for suspension linkage and steering applications on compatible Schumacher 1:10 platforms. Having four on hand keeps your build or repair fully covered without a return trip for extras. Features: 5.5mm ball diameter Extra long shank length Set of four pieces Threaded stud design for secure installation 7/7/26 cs